T ? vs Nullable<T>

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T ? vs Nullable

C#ではNullableと書く必要はなく、T?と書いて良い。

In C#, it is not necessary to use the full Nullable type name because the language allows you to write T? instead. >Consequently, ReSharper offers the option to replace the long type name with the shorthand.

###変更前

Nullable<DateTime> t;

###変更後

DateTime? t;